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›› 2012, Vol. 12 ›› Issue (1): 1-8.

• 流动与传递 •    下一篇

铜闪速炉分散风旋流喷吹的数值模拟

陈卓 殷术贵 周俊 王云霄   

  1. 中南大学能源科学与工程学院 中南大学能源科学与工程学院 中南大学冶金科学与工程学院 中南大学能源科学与工程学院
  • 收稿日期:2011-12-06 修回日期:2012-01-16 出版日期:2012-02-20 发布日期:2012-02-20
  • 通讯作者: 陈卓

Numerical Simulation of Copper Flash Smelting Process with Rotarily Distributed Air

CHEN Juo YIN Shu-gui ZHOU Jun   

  1. School of Energy Science and Engineering, Central South University School of Energy Science and Engineering, Central South University School of Energy Science and Engineering, Central South University
  • Received:2011-12-06 Revised:2012-01-16 Online:2012-02-20 Published:2012-02-20
  • Contact: CHEN Juo

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摘要： 提出将现有铜闪速炉中央扩散型精矿喷嘴中的分散风由径向直吹改为旋流喷吹方式，采用FLUENT 6.3软件对2种喷吹方式下反应塔内气粒两相的速度、温度、浓度等的分布特点进行了深入分析. 结果表明，分散风旋流喷吹对改善炉内的气粒混合过程及熔炼反应效率均具有积极作用，旋流条件下氧气利用率提高了4.5%；但旋流喷吹方式下小颗粒受分散风影响显著，反应塔内烟尘发生率提高.

关键词: 铜闪速炉, 数值模拟, 分散风, 旋流喷吹, 颗粒轨迹, 烟尘发生率

Abstract: A modification scheme was put forward to change the straightly distributed air in the central jet distributor (CJD) concentrate burner into rotarily distributed air in copper flash smelting furnace, and simulations were carried out to investigate the distributions of velocity, temperature and concentration fields of both the gaseous and particle phases in two burner schemes. Comparison of two simulation results show that the rotarily distributed air is more conducive to improvement of the mixing and reaction process between the gas and particles, which will result in the increase of oxygen utilization by 4.5%, however, as small particles tend to be more easily affected by the rotarily distributed air, the dust generation rate will also increase in such a condition.

Key words: copper flash smelting furnace, numerical simulation, distributed air, rotary flow, particle track, dust generation rate

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